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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. What makes the milk flow through the mammary glands?






2. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






3. Urinary calculi.






4. Help to signal hormone levels which we need both in the brain right next to each other.






5. Animal which has been castrated after puberty






6. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






7. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






8. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






9. 265-285 days






10. Look for infection - split - and rupture of the penis






11. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






12. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






13. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






14. 16-20 hours






15. Milk is 15% ________ and 85% __________.






16. Way to know everything is alright with the breeding male






17. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






18. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






19. Male on one pin and female on other side






20. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






21. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






22. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






23. Front feet and head first. (except for hogs and dogs)






24. 24 hours before end of estrus cycle






25. Contains and regulates the temp of the testes for sperm production






26. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






27. Why does estrus happen before ovulation?






28. 336 days






29. Can survive ~7 days in cow. vast majority <48 hours






30. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






31. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






32. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






33. Sperm production






34. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






35. Sperm is produced here






36. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






37. 45-60 days after breeding; re-breed as required






38. Allows extension of penis without fibro-elastic penis






39. (male) pushes the testes outward toward the legs for a cool-down off of the body






40. Animals which have only one estrous cycle (ex: dog - fox)






41. 265-285 days






42. Birthing process (termination of gestation)






43. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






44. Way to know everything is alright with the breeding male






45. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






46. Provide nourishment for the developing sperm






47. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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48. What makes the milk flow through the mammary glands?






49. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






50. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)